Improvement in water-wheel



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I WILLIAM T.QDUV ALL, or eEonenToWN, DISTRICT orv ooLUMBIA.

am Patent No. 103,162, aan May 17, 1870.

I IMPROVEMENT IN WATER-WHEEL.

The Schedule re'fen'fecl to in these Letters Patent and making part ofthesame.

To all whom-it may concern:

`Be it known that 1 WILLIAM T. DUVALL, of Georgetown, in the county ofWashington' and District of Oolumbliiarhave invented a new and useful`Ihnnnovemen't in Waiter-Wheels, which may be called a batterywater-pressure wheel; and I do hereby .declare thatthe following is afull, clear-,and exact `descriptionthereof',` reference being had to theaccompanying drawing forming part' of this specifica-v tion, and inwhich- `wheel audits housing.

Figure2 isa horizontalsection, taken onlinez z onfig.1. I

My invention relates to that class of 'wheels in Figure 1 represents a.central vertical section of my which the water is supplied `underpressure throughclose'tubularconnections from a'qneducts, or similar 'gIt consists First, in a combinatonwith the reaction or centri.

fugal `wheelof Barker or Whitlaw, Aof a series ofstationaryaahu'tmentsfor the discharging water to impinge upon-, andthereby increase its reactive effectv when under pressure.

Secondly, in` such an arrangement of the "wheel within its housing asthat the pressure applied fromv t below shall coiplnterbalance, ornearly so, the weight of the wheel, its shaft, and connections orgearing thereon.

if `"lhirdly, in the arrangement in relation toa pressure-wheel, of aregulating-valve or gate at the eduction-aperture, whereby all availablepressure. is ob-l tained, and water cconomized. A

`Fourthlygn the arrangement of a hollow neck on the under side of thewhcehfor forming connection t with't-he induction-pipe by-hydraulicpacking, as hereinafter more particularly described.

`Referring to the drawingy A represents the reactionwheel, having two ormore curvedwater-ways, a, which should be arranged todis charge an equalquantity. of water on opposite `sides, of the axis, to avoid lateralstrain.

B is anannular rim, rmly'securedhi the housing 0 around the periphery ofthe wheel A, and'wh'ich is formed, at its'l `inner under side or edge,concave, in

which concave is arranged aseries of platesV lor divisions, c, whichextend radially nearly in contact with the periphery ofthe wheel A, anddownward about to the level of its under side. t -The housing G may beconstructed in any convenient numberof parts," to facilitate the ttingand intraduction ofthe working parts therein, and is provided with aninduction-passage, D,in which is a cross-bar, d, with a step, toreceivethe toerof the shaft b of the wheel A.

The upper end of this passage D is suitably fitted to form awater-packing around the neck fof the wheel, and to its lower end isattached the water-main `or supply-pipe.

.g is the egress-passage, which is tted with any suitable valve or gate,h, by which the consumption of water and consequent velocity and powerotthe wheel may be regulated either by hand, or automatically, by a'governor. The housing G isalsc inclosed or covered in at top, and lnaybe provided with astuio` ing-box around the shaft b, if desired.

The operation of' the wheel will then be as follows: The water beingturned on at the induction-pas-` sage I), 'fillsthe wheel and thedischarge-chamber be' ,y

neath it. The gate h is then to be withdrawn gradually until therequired velocity ofthe wheel is attained, the water iiowing through thecurved ways a, under pressure, discharges from the periphery ot' thewheel A against the abntments, which increase its reaction,

whilst the curvedportion of the rim between these abutments aids in thesame bydefiecting. the waterfrom its direct course int-dthedischarge-chamber, and thence it escapes through the Vegress-opening g.

It will thus appear that, by the introduction et' the 'water underpressure to the under side of the wheel,

the weight ot" the latter is counterhalanced, and the friction of' 'itsbearings is much reduced; also, that by the arrangement and combinationof the abutlnents with'the wheel, the greatest amount of reaction isolle. tained and, by regulating the.A discharge-aperture insteadof theinduction, thefull force of all .the water used is developed, less,only, that consumed in friction.

Having thus described inyinvention,`

,Whatl' claim as new, and desire to secure by Letters Patent, 'is- 1.'The abutment-rim B, in. combination with theV reaction wheel A, allconstructed and operating suhstantia'lly as shown Iand described.

2. The induction of the water on the under sident the wheel, in suchmanner that the weight of the lattially as shown and described.

` 3. The combination of the neck f, arranged on the under' 'side of thewheel, with the upward extension of the supply-pipe D, provided withhydraulic packing, substantially as described. I

WM. T. DUVALL.

f ter is sustained by the pressure of the water, substau. I

Witnesses:

SYDNEY E. SMITH, y W. MORRIS SMITH.

